From nobody Mon Feb 9 16:45:41 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 057C0EB64DC for ; Sat, 15 Jul 2023 04:23:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230174AbjGOEX4 (ORCPT ); Sat, 15 Jul 2023 00:23:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229473AbjGOEXy (ORCPT ); Sat, 15 Jul 2023 00:23:54 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 95D1635A9 for ; Fri, 14 Jul 2023 21:23:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=aZOTevyyG/oq7Dcb/mDg4h3vECd5Czx9C+nnro/i/yI=; b=PrC2Q5i1RZUQ3NoWBymN8xdsDw VN9bzJ75Grrvkb2F/xMhSInJJKrjHYSrDiJu9Xz/AD/RyXELC58gEjFJHB7ADGAX8Tnys8yOuV2bM rfGZ4Lxfxnvu/yaz+Gx5bDS54gJNSJ1nA/CirJF8hbPtLQY4p3WMbWLdnOssESTuhpz5rCCKPj46f yu9xO+DnTP0rAlinUHRpeJ102wP6g7teVzOnYWub18YqnzON7d4UeG1hqCCuU5vuAZZyIy97m2TP9 XbUwm9tLEeZywDy7frHNsQXCf/HZi8bjPWB2O1fMmqwoGpZNoJ8u6m17dNfXibTmPDs85K7YUopTG QAzbF+Kw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qKWos-001p3q-EK; Sat, 15 Jul 2023 04:23:46 +0000 From: "Matthew Wilcox (Oracle)" To: Johannes Weiner Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, vitaly.wool@konsulko.com, cerasuolodomenico@gmail.com, nphamcs@gmail.com, hch@infradead.org, yosryahmed@google.com, akpm@linux-foundation.org Subject: [PATCH 2/5] zswap: Make zswap_store() take a folio Date: Sat, 15 Jul 2023 05:23:40 +0100 Message-Id: <20230715042343.434588-3-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230715042343.434588-1-willy@infradead.org> References: <20230714194610.828210-1-hannes@cmpxchg.org> <20230715042343.434588-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Only convert a few easy parts of this function to use the folio passed in; convert back to struct page for the majority of it. This does remove a few hidden calls to compound_head(). Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/zswap.h | 4 ++-- mm/page_io.c | 2 +- mm/zswap.c | 13 +++++++------ 3 files changed, 10 insertions(+), 9 deletions(-) diff --git a/include/linux/zswap.h b/include/linux/zswap.h index 850c377d9b6d..9f318c8bc367 100644 --- a/include/linux/zswap.h +++ b/include/linux/zswap.h @@ -10,7 +10,7 @@ extern atomic_t zswap_stored_pages; =20 #ifdef CONFIG_ZSWAP =20 -bool zswap_store(struct page *page); +bool zswap_store(struct folio *folio); bool zswap_load(struct page *page); void zswap_invalidate(int type, pgoff_t offset); void zswap_swapon(int type); @@ -18,7 +18,7 @@ void zswap_swapoff(int type); =20 #else =20 -static inline bool zswap_store(struct page *page) +static inline bool zswap_store(struct folio *folio) { return false; } diff --git a/mm/page_io.c b/mm/page_io.c index 32afc2a52982..b9fda7fb4e75 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -198,7 +198,7 @@ int swap_writepage(struct page *page, struct writeback_= control *wbc) folio_unlock(folio); return ret; } - if (zswap_store(&folio->page)) { + if (zswap_store(folio)) { folio_start_writeback(folio); folio_unlock(folio); folio_end_writeback(folio); diff --git a/mm/zswap.c b/mm/zswap.c index f6a78e085479..ba50b186ee27 100644 --- a/mm/zswap.c +++ b/mm/zswap.c @@ -1201,11 +1201,12 @@ static void zswap_fill_page(void *ptr, unsigned lon= g value) memset_l(page, value, PAGE_SIZE / sizeof(unsigned long)); } =20 -bool zswap_store(struct page *page) +bool zswap_store(struct folio *folio) { - swp_entry_t swp =3D { .val =3D page_private(page), }; + swp_entry_t swp =3D folio_swap_entry(folio); int type =3D swp_type(swp); pgoff_t offset =3D swp_offset(swp); + struct page *page =3D &folio->page; struct zswap_tree *tree =3D zswap_trees[type]; struct zswap_entry *entry, *dupentry; struct scatterlist input, output; @@ -1219,11 +1220,11 @@ bool zswap_store(struct page *page) gfp_t gfp; int ret; =20 - VM_WARN_ON_ONCE(!PageLocked(page)); - VM_WARN_ON_ONCE(!PageSwapCache(page)); + VM_WARN_ON_ONCE(!folio_test_locked(folio)); + VM_WARN_ON_ONCE(!folio_test_swapcache(folio)); =20 - /* THP isn't supported */ - if (PageTransHuge(page)) + /* Large folios aren't supported */ + if (folio_test_large(folio)) return false; =20 if (!zswap_enabled || !tree) --=20 2.39.2